PST3S-H4 Star Tracker
TY-Space Technology
The PST3S-H4 is a compact, low-power refractive-optics star tracker designed for high-pointing-accuracy spacecraft attitude determination, with strong dynamic performance and radiation resistance.
Key figurescomparable across the catalogue
- Mass
- 0.095 kg
- Power
- 1 W
- Largest dimension
- 98 mm
- Design life
- 5 years
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Dimensions (Sensor+Baffle)
- 33x33x98 mm3
- Mass (Sensor+Baffle)
- 95 g
- Optical design (Lens)
- Refractive
- Vibration (FM)
- sine 13 g, random 12 grms
- Vibration (Qualification)
- sine 16 g, random 18 grms
- Working temperature
- -40 to 40 C
- Radiation resistance
- 30 Krad [Si]
- Field of view
- 15x18 deg [effective]
- Update rate
- 10 Hz
- Dynamic performance
- 3 deg/s
- Sensitivity
- 5.8 Mv, Go.Ref star
- Exclusive angle (Sun)
- < 35 deg
- Exclusive angle (Earth)
- < 25 deg
- Data interface
- RS422/CAN
- Power consumption
- 1 W
- Supply voltage
- 5 V
- Design life
- 5 years
About
The PST3S-H4 Star Tracker is a compact autonomous attitude-sensing instrument (sensor+baffle, 33x33x98 mm3, 95g) built on a refractive optical design. It is engineered for small satellites requiring precise on-orbit attitude determination, providing a 15×18 degree effective field of view, 10 Hz update rate, and dynamic tracking up to 3 deg/s while detecting reference stars down to 5.8 Mv (Go.Ref star). It communicates via RS422/CAN, operates from a 5V supply consuming only 1W, and is rated for a 5-year lifetime. It withstands a working temperature range of -40C to 40C, radiation exposure up to 30 Krad [Si], and vibration loads of 13g sine/12 grms random (FM) or 16g sine/18 grms random (qualification), with sun/earth exclusion angles under 35/25 degrees, suiting low-power, radiation-tolerant satellite attitude control applications.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.